It might be difficult to find a knowledgeable sales clerk because consumers could just get the information from him$/$her and buy the same product somewhere else $($often online$)$ cheaper. Since the retailers wouldn't get paid for giving out the information $($i$.$e$.,$ training their salesclerks$),$ the amount of information is under$-$produced.

This occurs because information is:

Group of answer choices

moral hazard

adverse selection

asymmetric

a public good